I just contacted an American based Nightforce dealer to ask what the process would be to import a Nightforce scope. This is the response I have had.
Nightforce has a company policy that prohibits export of new Nightforce products. We encourage you to buy Nightforce from your countries authorized distribution and would refer you to Nightforce USA for help @ 800 732 9824. If you want us to ship to a US address we are happy to do so provided that we can comply with US government regulation.
Has anyone else got personal experience of importing a Nightforce scope from USA? Which company did they approach? If you would rather PM me your response that would be understandable.